/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * This file is part of retabel.
 *
 * Copyright (c) 2011 by individual contributors as indicated by the
 * @author tags. See the copyright.txt file in the distribution
 * for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.retabel.backendbean;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.myfaces.custom.fileupload.UploadedFile;
import org.retabel.jsf.ReportDesignUriBuilder;
import org.retabel.util.HttpDeleteClientRequestRunner;
import org.retabel.util.HttpPostClientRequestRunner;
import org.retabel.util.LogLines;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.enterprise.context.RequestScoped;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;
import javax.inject.Named;
import java.io.Serializable;
import java.util.List;

@ManagedBean
@RequestScoped
@Named
public class ReportDesignUploadBean implements Serializable {

    /** The logger. */
    private static final Logger logger = LoggerFactory.getLogger(ReportDesignUploadBean.class);

    /** The package name. */
    private String packageName;
    /** The version. */
    private String version;
    /** Type of the render engine. */
    private String renderEngine;
    /** The uploaded file. */
    private UploadedFile uploadedFile;

    /** The log lines. */
    private final LogLines logLines = new LogLines(logger);

    /**
     * Handles the file upload.
     *
     * @throws Exception if an exception occurs.
     */
    public void uploadFile() throws Exception {
        if (this.uploadedFile != null) {
            Boolean deleteSuccessful = deletePackage();
            if (deleteSuccessful != null && deleteSuccessful) {
                addPackage();
            }
        } else {
            logLines.log("missing upload file");
        }
    }

    /**
     * Adds a report design package.
     *
     * @throws Exception if an exception occurs.
     */
    private void addPackage() throws Exception {
        new HttpPostClientRequestRunner<Boolean>(logLines) {
            @Override
            protected HttpEntity getHttpEntity() throws Exception {

                ByteArrayEntity reqEntity = new ByteArrayEntity(uploadedFile.getBytes());
                reqEntity.setContentType("application/zip");
                return reqEntity;
            }

            @Override
            protected Boolean onSuccess(HttpResponse response, LogLines logLines) throws Exception {
                logLines.log(getResponseContentAsString(response));

                FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("upload successful"));

                return Boolean.TRUE;
            }

            @Override
            protected void onFailure(HttpResponse response, LogLines logLines) throws Exception {
                logLines.log(getResponseContentAsString(response));

                FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, "upload failed",
                                                                                    response.getStatusLine().toString()));
            }
        }.run(ReportDesignUriBuilder.getReportDesignUploadURI(packageName, version, renderEngine));
    }

    /**
     * Deletes a report design package.
     *
     * @return true, if the package is deleted successfully.
     * @throws Exception if an exception occurs.
     */
    private Boolean deletePackage() throws Exception {
        return new HttpDeleteClientRequestRunner<Boolean>(logLines) {
            @Override
            protected Boolean onSuccess(HttpResponse response, LogLines logLines) throws Exception {
                logLines.log(getResponseContentAsString(response));

                return Boolean.TRUE;
            }

            @Override
            protected void onFailure(HttpResponse response, LogLines logLines) throws Exception {
                logLines.log(getResponseContentAsString(response));

                FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR,
                                                                                    "delete design package failed",
                                                                                    response.getStatusLine().toString()));
            }
        }.run(ReportDesignUriBuilder.getReportPackageDeleteURI(packageName, version));
    }

    /**
     * Returns the log lines.
     *
     * @return the log lines.
     */
    public List<LogLines.LogLine> getLogLines() {
        return logLines.getLogLines();
    }


    /**
     * Sets the packageName.
     *
     * @param newPackageName The packageName value to set.
     */
    public void setPackageName(String newPackageName) {
        this.packageName = newPackageName;
    }

    /**
     * Gets the packageName.
     *
     * @return The packageName value.
     */
    public String getPackageName() {
        return packageName;
    }

    /**
     * Gets the renderEngine.
     *
     * @return The renderEngine value.
     */
    public String getRenderEngine() {
        return renderEngine;
    }

    /**
     * Sets the renderEngine.
     *
     * @param newRenderEngine The renderEngine value to set.
     */
    public void setRenderEngine(String newRenderEngine) {
        this.renderEngine = newRenderEngine;
    }

    /**
     * Sets the uploadedFile.
     *
     * @param newUploadedFile The uploadedFile value to set.
     */
    public void setUploadedFile(UploadedFile newUploadedFile) {
        this.uploadedFile = newUploadedFile;
    }

    /**
     * Gets the uploadedFile.
     *
     * @return The uploadedFile value.
     */
    public UploadedFile getUploadedFile() {
        return uploadedFile;
    }

    /**
     * Gets the version.
     *
     * @return The version value.
     */
    public String getVersion() {
        return version;
    }

    /**
     * Sets the version.
     *
     * @param newVersion The version value to set.
     */
    public void setVersion(String newVersion) {
        this.version = newVersion;
    }
}